2M52

NMR Structure of the third RNA Recognition Motif (RRM) of U2 small nuclear ribonucleoprotein auxiliary factor (U2AF) 2

SOLUTION NMR

NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	2D 1H-15N HSQC	1.2 mM [U-98% 13C; U-98% 15N] protein, 20 mM sodium phosphate, 100 mM sodium chloride, 5 mM sodium azide, 8 mM DTT	90% H2O/10% D2O	0.1298	6.0	ambient	298
2	4D-HACANH-APSY	1.2 mM [U-98% 13C; U-98% 15N] protein, 20 mM sodium phosphate, 100 mM sodium chloride, 5 mM sodium azide, 8 mM DTT	90% H2O/10% D2O	0.1298	6.0	ambient	298
3	5D-CBCACONH-APSY	1.2 mM [U-98% 13C; U-98% 15N] protein, 20 mM sodium phosphate, 100 mM sodium chloride, 5 mM sodium azide, 8 mM DTT	90% H2O/10% D2O	0.1298	6.0	ambient	298
4	5D-HACACONH-APSY	1.2 mM [U-98% 13C; U-98% 15N] protein, 20 mM sodium phosphate, 100 mM sodium chloride, 5 mM sodium azide, 8 mM DTT	90% H2O/10% D2O	0.1298	6.0	ambient	298
5	3D 1H-13C NOESY aliphatic	1.2 mM [U-98% 13C; U-98% 15N] protein, 20 mM sodium phosphate, 100 mM sodium chloride, 5 mM sodium azide, 8 mM DTT	90% H2O/10% D2O	0.1298	6.0	ambient	298
6	3D 1H-13C NOESY aliphatic	1.2 mM [U-98% 13C; U-98% 15N] protein, 20 mM sodium phosphate, 100 mM sodium chloride, 5 mM sodium azide, 8 mM DTT	90% H2O/10% D2O	0.1298	6.0	ambient	298
7	3D 1H-13C NOESY aromatic	1.2 mM [U-98% 13C; U-98% 15N] protein, 20 mM sodium phosphate, 100 mM sodium chloride, 5 mM sodium azide, 8 mM DTT	90% H2O/10% D2O	0.1298	6.0	ambient	298

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Bruker	AVANCE	600
2	Bruker	AVANCE	800

NMR Refinement
Method	Details	Software
simulated annealing		CYANA

NMR Ensemble Information
Conformer Selection Criteria	target function
Conformers Calculated Total Number	80
Conformers Submitted Total Number	20
Representative Model	1 (closest to the average)

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	structure solution	CYANA		G ntert P.
2	refinement	OPAL		Luginbuhl, Guntert, Billeter and Wuthrich
3	collection	TopSpin	3.1	Bruker Biospin
4	processing	TopSpin	3.1	Bruker Biospin
5	chemical shift assignment	CARA		Keller and Wuthrich
6	data analysis	CARA		Keller and Wuthrich
7	chemical shift assignment	j-UNIO		Herrmann, Guntert and Wuthrich
8	peak picking	j-UNIO		Herrmann, Guntert and Wuthrich
9	structure solution	j-UNIO		Herrmann, Guntert and Wuthrich

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM133198.